Improvement in sash-balances



U. DAVIS. Sash-Balances.

N0;154,587 Patented Sept.1,1874.

WITNESSES THE GRAPHIC CO. PHOTOUTFLB BI: H PARK PMCE BLY- UNITED STATESPATENT QFFICE.

OBADIAH DAVIS, or BATTLE GREEK, MICHIGAN.

IMPROVEMENT IN SASH-BALANCESI Specification forming part of LettersPatent No. 154,587, dated September 1 1 74 application filed July 25,1874.

' a part of this specification, and to the letters and figures ofreference marked thereon.

Figure '1 of the drawing is a representation of a vertical sectionalView of my sashbalance. Fig. 2 is a plan View, and Fig. 3 is a frontView, of the same.

. This invention has relation to sash balances and locks; and itconsists of a spring clamping dog composed of a griping portion, afinger portion, and a tongue, combined with a locking-bolt and anoperating-spring, whereby the sash-cord is released from the action ofthe griping portion of the said dog at the same time that the bolt isretracted by the tongue, as will be hereinafter more fully explained.

In the annexed drawings, A designates the upper rail of the lower sash,and B is the lower rail of the upper sash. O designates a lock-case,which is secured upon the rail A at the middle of its length, in whichcase works a lock-bolt, g, which serves, in connection with a catch, E,on the rail B, to lock this rail to the rail A when they are broughttogether. The bolt 9 has an offset, h, on one sideof it, from which ahandle, J, rises, and is allowed free play in a slot made through thecase 0. By means of this handle J, a person can retract the-bolt andrelease the sashes, and by means of a spring, S, the bolt is shot out sothat it will engage automatically with its catch E. D designates a dog,which is pivoted between two ears, 0 0, cast on top of the case 0, andwhich is constructed with a curved finger-piece, a, a griping portion,1), an arm, 0, and a tongue, d. The latter portion to wit, the tonguedpasses down through the case 0, and is acted on by the spring S,through the medium of a lug, i, on the bolt 9. This action of the springholds the dog D in the position shown in Fig. 1, in which position thesuspension-cord f will be griped and held by the portion b. The cord fpasses beneath the portion b, thence up and beneath an antifrictionroller, 0, and is fastened to the sash B, after passing over a pulleyapplied to the heading of the window-frame. By pressing the finger-piecea of the dog D forward, the suspension-cord f will be released, and thesash may be raised or lowered. At the same time the cord f is released,as stated, the bolt g will be retracted from its catch E by the actionof the tongue 01 on the lug c.

What I claim as new, and desire to secure by Letters Patent, is

The combination of the dog D, having the tongue (1, finger-piece a, andgriping portion 1), with the bolt Gr and spring b, operatingsubstantially as specified.

In testimony thatI claim the above I have hereunto subscribed my name inthe presence of two witnesses.

OBADIAH DAVIS.

